单项选择题
Which of the following commands would allow a computer to acquire an IP address?（）
A.ipconfig/release B.ipconfig/renew C.ipconfig/all D.ipconfig/help
单项选择题 Interior gateway protocols are used for resolving routes:（）。
单项选择题 At which of the following layers does the UDP protocol operate?（）
单项选择题 Which of the following connector types is commonly identified by two rows of pins with four in onerow and five in the other?（）
